Main SpecsFrame: Advanced-Grade Composite, 12X142Mm Thru-Axle, DiscFork: Advanced Sl-Grade Composite, Full-Composite Overdrive Aero Steerer, 12X100Mm Thru-Axle, DiscGroupsetDerailleur: Shimano Ultegra Di2 Fd-R8150Rear Derailleur: Shimano Ultegra Di2 Rd-R8150Shifters: Shimano Ultegra Di2 St-R8170Cranks: Shimano Ultegra, 34/50 With Giant Power Pro Power Meter Xs:165Mm, S:165Mm, M:170Mm, M/L:170Mm, L:172.5Mm, Xl:172.5MmCassette: Shimano Ultegra, 12-Speed, 11X34Front Brake: Shimano Ultegra Di2 Hydraulic, Shimano Rt-Cl800 Rotors [F]160Mm, [R]160MmRear Brake: Shimano Ultegra Di2 Hydraulic, Shimano Rt-Cl800 Rotors [F]160Mm, [R]160MmChain: Shimano UltegraBottom Bracket: Shimano, Press FitWheelsRims: Giant Slr 0 40 Carbon Disc WheelsystemTires: Cadex Classics, Tubeless, 700X32C (33.5Mm), FoldingComponentsHandlebar: Giant Contact Slr D-Fuse Xs:404/380Mm, S:404/380Mm, M:424/400Mm, M/L:424/400Mm, L:444/420Mm, Xl:444/420MmStem: Giant Contact Sl Aerolight Xs:80Mm, S:90Mm, M:100Mm, M/L:100Mm, L:110Mm, Xl:110MmSaddle: Giant Fleet SlSeatpost: Giant D-Fuse Slr, Composite, -5/+15Mm Offset